Owners of Xiaomi smartphones often wonder about the technical characteristics of their device, especially when it comes to wireless communications. The Bluetooth protocol version is critical to understanding which devices your phone can work with reliably and at maximum data transfer rates. However, the manufacturer rarely indicates this information in the basic settings menu, limiting itself to only mentioning the presence of the module.
Users of flagship models such as Xiaomi 13 Ultra or Redmi Note 12 Procan expect support for the latest standards, but sometimes face ambiguity in the specifications. This creates difficulties when purchasing wireless headphones, fitness bracelets or car headsets that require certain versions of the protocol to work correctly. In this article, we will analyze in detail all the available ways to obtain this information.
Why you need to know the version of Bluetooth on your device
Understanding which one communication protocol is installed in your smartphone helps to avoid problems with the compatibility of peripheral devices. For example, delivering high-quality, latency-free audio often requires support for codecs that are only enabled on certain versions of the standard. If you try to connect a modern headset to an older headset, you may experience connection dropouts or poor sound quality.
In addition, newer versions, such as Bluetooth 5.0 and higher, provide significantly greater range and energy efficiency. This is especially true for those who use a smart home or wear activity trackers. Knowing the exact specification allows you to correctly configure automation scenarios and optimize battery consumption Sometimes users confuse the software version number with the hardware module version. These are different things: the firmware can be updated, but the physical capabilities of the chip remain unchanged. Therefore, diagnostics should be carried out at the level of equipment identification, and not just viewing the system build number..
Sometimes users confuse the software version number with the hardware module version. These are different things: the firmware can be updated, but the physical capabilities of the chip remain unchanged. Therefore, diagnostics must be carried out at the hardware identification level, and not just by looking at the system build number.
Checking basic information through the settings menu
The simplest, but not always informative, way is to look at the standard smartphone menu. In the shell MIUI or new HyperOS information about Bluetooth is often hidden deep in the system partitions. You need to go to the section Settings, then select About phone.
Here you can find general information about the processor and radio modules, but the specific Bluetooth version number (for example, 5.2 or 5.3) may be missing. The system sometimes only displays the "Enabled" status or the name of the connected device. This is due to Xiaomi's policy of simplifying the interface for the average user.
However, in some models of the series Redmi K or Poco F this information is displayed in the "All characteristics" subsection. If you see Bluetooth mentioned there, read the fine print carefully. The absence of an explicit version indication often means that a standard module for a given processor is used, which can be specified by the chipset model.
⚠️ Attention: Do not try to find the Bluetooth version in the "About" section inside the Bluetooth connections menu itself. It only displays the device name and visibility status, but not the technical specification of the chip.
If there is no information about the Bluetooth version in the "About phone" menu, look for the exact model of your smartphone on the official Xiaomi website in the characteristics section - the current communication standard is always indicated there.
Using the engineering menu for accurate diagnostics
The engineering menu is a hidden section of the system intended for testing equipment by service centers. On Xiaomi phones, it is often accessed through a special code in the Phone application. This method allows you to see the technical parameters of radio modules, including detailed information about Bluetooth adapter.
To enter, use the combination ##6484## or ##4636##. After entering the code, a list of tests will open. Select "Phone Information" or "Bluetooth Test". In the window that opens, look for lines containing version designations or LMP (Link Manager Protocol) properties.
Input in the dialer: ##4636##The engineering menu interface may differ depending on the version of Android and the specific device model. On some Xiaomi firmwares this access is blocked or redirects to the regular Hardware Test (CIT) menu. If the code does not work, it means that the manufacturer has limited access to this data for ordinary users.
What to do if the code does not work?
If entering the code does not open the menu, try installing the "QuickShortcutMaker" application from a trusted source. It allows you to create shortcuts for hidden system activities, including Bluetooth engineering tests, even if the code is blocked by the operator or firmware.
Using third-party applications for hardware analysis
The most reliable way to get comprehensive information is to use specialized utilities from the Google Play Store. Applications like AIDA64, CPU-Z or Device Info HW read data directly from Android kernel system files, bypassing user interface restrictions.
After installing such a app, go to the "Network" or "Devices" tab. Find the Bluetooth section. Not only the version number will be indicated here, but also the device address, operating status and supported profiles. This data is the most accurate as it is read directly from the controller.
The application AIDA64 is especially useful because it shows the LMP version. This is an internal protocol identifier that can be used to accurately determine the Bluetooth generation. For example, LMP 10 is Bluetooth 5.0 compliant and LMP 12 is Bluetooth 5.2 compliant. Knowing this correspondence, you can easily decipher the capabilities of your Xiaomi.
- 📱 AIDA64: shows detailed information about the LMP version and chip manufacturer.
- 🔍 CPU-Z: a lightweight tool that displays basic data about wireless interfaces in the "System" tab.
- ⚙️ Device Info HW: specializes in displaying technical specifications of hardware, including radio modules.
☑️ Check through the app
LMP version decoding and correspondence table
In technical reports of applications you will often find the abbreviation LMP (Link Manager Protocol). This is the version number of the software that controls the connection at a low level. It is by this number that you can unambiguously determine the Bluetooth generation, even if the application does not explicitly write it in words.
Below is a table of correspondence between LMP numbers and Bluetooth versions. By checking it, you will understand whether your phone supports modern features such as LE Audio or increased transmission range.
| LMP version | Bluetooth version | Key features |
|---|---|---|
| LMP 9 | Bluetooth 4.2 | Basic energy efficiency, standard for older devices |
| LMP 10 | Bluetooth 5.0 | Increased speed and range, the basis for modern gadgets |
| LMP 11 | Bluetooth 5.1 | Improved signal direction detection (AoA/AoD) |
| LMP 12 | Bluetooth 5.2 | LE Audio support and improved channel synchronization |
| LMP 13 | Bluetooth 5.3 | Increased connection stability and energy efficiency |
Please note that having a new version of LMP does not always guarantee the operation of all functions if the smartphone manufacturer has programmatically limited the profiles. However, your Xiaomi smartphone Xiaomi smartphone will have the physical ability to work at this frequency and at this speed.
The LMP number is the most accurate indicator of the real Bluetooth version, since it is hardwired into the firmware of the radio module itself and does not depend on the version of the MIUI shell.
Dependence of the version on the processor and smartphone model
The Bluetooth version in Xiaomi smartphones directly depends on the installed processor (SoC). Qualcomm, MediaTek and others integrate communication modules directly into the chipset. Therefore, knowing the processor model, you can with a high degree of probability guess the Bluetooth version without even running tests.
For example, processors of the Snapdragon 8 Gen 1 series and newer usually support Bluetooth 5.2 or 5.3. More budget solutions based on Helio G-series may be limited to version 5.0 or 5.1. This is important to consider when purchasing budget models of the Redmi Noteseries, where the manufacturer can save on components.
⚠️ Attention: Interfaces and wireless communication capabilities may vary depending on the regional firmware version (Global, CN, EEA). Always check the specifications for your specific region with an official source, as some features may be disabled by software.
It is also worth remembering that the antenna system plays an important role. Even if the chip supports Bluetooth 5.3, poor design of the antennas in the smartphone body can reduce the actual range and stability of the connection to the level of older standards. Hardware implementation Xiaomi usually of high quality, but in ultra-thin models compromises are possible.
Does updating Android affect the Bluetooth version?
No, updating the operating system cannot upgrade the physical version of Bluetooth. It can only add support for new codecs or profiles if they were provided by the chip manufacturer, but will not change the LMP number.
Frequent questions and problems when determining the version
Users often encounter a situation where different applications show different data. This may be due to information caching or a driver reading error. In this case, it is recommended to reboot the device and repeat the check through AIDA64, since this tool is considered the most authoritative in the community.
Another problem is the lack of connection to the peripherals. If the phone does not see the headphones, the problem may not be with the Bluetooth version, but with a profile conflict or MIUI power saving settings. Check if the system is restricting background work for applications that manage the connection.
Is it possible to update the Bluetooth version on Xiaomi?
It is impossible to physically update the Bluetooth version, since this is a hardware characteristic of the chip. However, a firmware update (MIUI/HyperOS) may add support for new data transfer standards or codecs, if the manufacturer has provided such a feature at the driver level.
Why does the application show Bluetooth 4.2 on a new phone?
This is an application error or incorrect data reading. On modern Xiaomi smartphones (released after 2020) it is almost impossible to find Bluetooth below version 5.0. Try another diagnostic application, for example CPU-Z.
Does the Bluetooth version affect the Internet speed?
No, the Bluetooth version does not affect the speed of the mobile data (4G/5G/Wi-Fi). It only affects the data transfer speed between the phone and Bluetooth devices (headphones, watches, files).
Where can I see the Bluetooth device address?
The Bluetooth MAC address can be found in the menu Settings -> About phone -> All characteristics or through the engineering menu using the code ##4636## in the device information section.
⚠️ Attention: When performing a factory reset (Hard Reset), all paired devices will be deleted and you will have to re-install them. Make sure you know the passwords for your gadgets before performing this procedure.